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HEXANOIC ANHYDRIDE

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HEXANOIC ANHYDRIDE Basic information

Product Name:
HEXANOIC ANHYDRIDE
CAS:
2051-49-2
MF:
C12H22O3
MW:
214.3
EINECS:
218-121-4
Mol File:
2051-49-2.mol
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HEXANOIC ANHYDRIDE Chemical Properties

Melting point:
-40 °C
Boiling point:
246-248 °C(lit.)
Density 
0.928 g/mL at 20 °C(lit.)
refractive index 
n20/D 1.428(lit.)
Flash point:
>230 °F
storage temp. 
Store below +30°C.
solubility 
ethanol: soluble1g/10 mL, clear, colorless
form 
Liquid
color 
Clear colorless to light yellow
explosive limit
0.7%(V)
Water Solubility 
Hydrolyzes in water.
Sensitive 
Moisture Sensitive
BRN 
1776561
CAS DataBase Reference
2051-49-2(CAS DataBase Reference)
EPA Substance Registry System
Hexanoic acid, anhydride (2051-49-2)
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Safety Information

Hazard Codes 
C
Risk Statements 
34
Safety Statements 
26-36/37/39-45
RIDADR 
UN 3265 8/PG 2
WGK Germany 
3
TSCA 
Yes
HazardClass 
8
PackingGroup 
III
HS Code 
29159000

MSDS

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HEXANOIC ANHYDRIDE Usage And Synthesis

Chemical Properties

clear colorless to light yellow liquid

Preparation

To an ice-cooled flask containing 116 gm (1.0 mole) of n-caproic acid is added 21.0-23.10 gm (0.5-0.55 mole) of ketene at a rate of 0.45 mole/hr. The reaction mixture is fractionally distilled at atmospheric pressure to afford a forecut of acetone, acetic acid, and acetic anhydride. The oil bath is raised to 220°C over a 1-hr period, kept there for 3 hr to ensure complete removal of acetic acid, and then cooled. The distillation is continued under reduced pressure to afford 86-95 gm (80-87%), b.p. 109- 112°C (3 mm Hg) and b.p. 118-121°C (6 mm Hg).
Preparation of n-Caproic Anhydride

HEXANOIC ANHYDRIDE Preparation Products And Raw materials

Raw materials

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